1081217358 has 48 divisors (see below), whose sum is σ = 2533527360. Its totient is φ = 331273152.

The previous prime is 1081217351. The next prime is 1081217359. The reversal of 1081217358 is 8537121801.

1081217358 is a `hidden beast` number, since 10 + 81 + 217 + 358 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081217351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46260 + ... + 65592.

It is an arithmetic number, because the mean of its divisors is an integer number (52781820).

Almost surely, 2^1081217358 is an apocalyptic number.

1081217358 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081217358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1266763680).

1081217358 is an abundant number, since it is smaller than the sum of its proper divisors (1452310002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1081217358 is a wasteful number, since it uses less digits than its factorization.

1081217358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19593 (or 19590 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 1081217358 is about 32881.8697461078. The cubic root of 1081217358 is about 1026.3709145344.

The spelling of 1081217358 in words is "one billion, eighty-one million, two hundred seventeen thousand, three hundred fifty-eight".